Thomasin McKenzie as Eloise Turner

Anya Taylor-Joy as Sandie

Matt Smith as Jack

Rita Tushingham as Peggy Turner

Michael Ajao as John

Synnøve Karlsen as Jocasta

Pauline McLynn as Carol

Terence Stamp as Silver-Haired Gentleman

Diana Rigg as Ms. Collins

Aimée Cassettari as Eloise's Mother

Colin Mace as Taxi Driver #1

Jessie Mei Li as Lara

Kassius Nelson as Cami

Rebecca Harrod as Ashley

Alan Mahon as Toucan Bartender

Connor Calland as Drunk Student

Josh Zaré as Student at Party

Jacqui-Lee Pryce as College Administrator

Elizabeth Berrington as Ms. Tobin

James Phelps as Cloakroom Attendant

Oliver Phelps as Cloakroom Attendant

Beth Singh as Cilla Black

Paul Brightwell as Cubby

Will Rogers as Café de Paris Bartender

Terence Frisch as Rialto Club Owner

Celeste Dring as Shop Assistant

Jeanie Wishes as Marionetta

Andrew Bicknell as Mr. Pointer

Adam Sopp as Toucan Drunk

Richard Corgan as Toucan Drunk's Mate

Michael Mears as Punter #1

Tom Hartwell as Punter #2

Paul Hamilton as Punter #3

Wayne Cater as Punter #4

Sam Claflin as Punter #5

Sam Parks as Punter #6

Alan Ruscoe as Punter #7

Margaret Nolan as Sage Barmaid

Christopher Carrico as Additional Punter

Kent Goldfinch as Additional Punter

Ian Harrod as Additional Punter

Ian Hartley as Additional Punter

Daniel Maggott as Additional Punter

Richard O'Sullivan as Additional Punter

Michael Jibson as Male Detective

Lisa McGrillis as Female Detective

Al Roberts as Librarian

Derek Lea as Taxi Driver #2

Lati Gbaja as Soho Passerby (uncredited)

Paul Riddell as Train Passenger (uncredited)

Katrina Vasilieva as Burlesque Dancer (uncredited)

Ashley Shaw as Rialto Dancer